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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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during when

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase 'during when' is not correct in written English.
The correct phrase is 'during which'. For example: I will never forget the summer during which I finally decided to start my own business.

⚠ May contain grammatical issues

News & Media

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

28 human-written examples

That cliché came to mind during "When Them," the assured, resonant duet Ms. Rosenblit created for herself and her longtime collaborator, the keenly expressive Addys Gonzalez.

If rolling out the baby photos on the big screens during When We Were Young feels a bit mawkish, her Bond theme Skyfall and Set Fire to the Rain both sound gripping and dramatic.

It was a journey I have repeated at intervals ever since, before and after the Olympics – but not during, when the authorities deemed it helpful to shut the station most convenient for the main stadium.

To examine what happens during when apps go on sale, Distimo examined the 100 top grossing apps in the iPhone App Atore, iPad App Store and Android Market.

News & Media

TechCrunch

Apparently the Google-only clause was only specific to the Canadian roll out and will be lifted during when the paywall launches worldwide on March 28th.

News & Media

TechCrunch

The spinach plants were observed for 5 weeks during when the potted soils were watered at 2-day intervals and kept weed-free.

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Human-verified similar examples from authoritative sources

Similar Expressions

31 human-written examples

This year, like last, Thanksgiving falls during Ramadan, when Muslims fast during daylight hours.

News & Media

The New York Times

They postulated that PaO2 rose during inflation when the alveoli were open and fell (during exhalation) when the alveoli collapsed [18].

During the Event S, the Esb layers appear during nighttime when E z is small.

Eisenberg means during production, when he was shooting his scenes.

(It is unavailable during holidays when he returns home).

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Expert writing Tips

Best practice

Replace "during when" with grammatically correct alternatives like "during which", "while", or "as" to ensure clarity and credibility in your writing.

Common error

Don't use "during when" because it's grammatically redundant. "During" already implies a time frame, and "when" introduces a clause, creating an unnecessary combination. Instead, use "during which" or rephrase the sentence using "while" or "as".

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

84%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Linguistic Context

Conjunction phrase, albeit grammatically questionable. Ludwig AI indicates that the phrase "during when" is incorrect, and usage should be avoided in formal writing. The primary function is to connect two events occurring simultaneously, but the construction is non-standard.

Expression frequency: Common

Frequent in

News & Media

41%

Science

41%

Wiki

7%

Less common in

Formal & Business

0%

Reference

0%

Encyclopedias

0%

Ludwig's WRAP-UP

While the phrase "during when" appears in various sources, including news, science, and wiki articles, it's generally considered grammatically incorrect. Ludwig AI suggests using alternatives such as "during which", "while", or "as" for improved clarity and grammatical accuracy. Although "during when" is common, especially in informal registers, it is not advisable in formal writing. Utilizing correct alternatives enhances the credibility and precision of your communication.

FAQs

Is "during when" grammatically correct?

No, "during when" is generally considered grammatically incorrect. The word "during" already implies a period of time, making the addition of "when" redundant. You should use "during which" or rephrase the sentence.

What can I use instead of "during when"?

Better alternatives include "during which", "while", or "as", depending on the specific context of your sentence. These options provide clarity and grammatical correctness.

How do I properly use "during which" in a sentence?

"During which" is used to introduce a relative clause that specifies a period of time. For example, "The project lasted for three months, during which time we faced several challenges."

Why is "during when" considered redundant?

The word "during" already indicates that something is happening within a specific timeframe. Adding "when" is unnecessary because it duplicates the temporal reference, making the phrase awkward and grammatically unsound.

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Source & Trust

84%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Most frequent sentences: